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National Drinking Water Database

Combined Uranium (pCi/L) in Wisconsin

Uranium is a radioactive element commonly found in most rocks; processed ore is used for power generation and weapons manufacture. [read more]

The Most Polluted Communities in Wisconsin

61 water utilities reported detecting Combined Uranium (pCi/L) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Combined Uranium (pCi/L) level

RankSystem Population Served Positive test results of total reported tests Average Level
1Bethel Nursing & Rehab Center
Arpin, WI
2252 of 221.35 pCi/L
(11.7 to 31 pCi/L)
2Colby Waterworks
Colby, WI
1,6001 of 111.4 pCi/L
(11.4 pCi/L)
3Gresham Waterworks
Gresham, WI
5348 of 87.6 pCi/L
(0.1 to 25.8 pCi/L)
4Thorp Waterworks
Thorp, WI
1,5651 of 15 pCi/L
(5 pCi/L)
5Janesville Water Utility
Janesville, WI
62,7204 of 44.34 pCi/L
(2.95 to 8.2 pCi/L)
6Carriage Hills Condominiums
Elm Grove, WI
504 of 44.25 pCi/L
(3.2 to 5.2 pCi/L)
7Boscobel Waterworks
Boscobel, WI
3,4194 of 43.38 pCi/L
(2.5 to 4.9 pCi/L)
8Brookfield Water Utility
Brookfield, WI
21,9005 of 53.31 pCi/L
(2.2 to 5.67 pCi/L)
9Union Grove Waterworks
Union Grove, WI
4,1019 of 93.13 pCi/L
(2.5 to 4 pCi/L)
10Pewaukee Village Waterworks
Pewaukee, WI
8,2751 of 13.07 pCi/L
(3.07 pCi/L)

Health Based Limits for Combined Uranium (pCi/L)

Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.15 pCi/L

Violation Summary for Combined Uranium (pCi/L) in Wisconsin

There are no violations reported for this contaminant in Wisconsin